Home / 8,385.02-12,571.32-4,221.98

Finding the Fourth Proportional to 8,385.02, 12,571.32 and 4,221.98

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Solution

The fourth proportional to 8,385.02, 12,571.32 and 4,221.98 is: 6,329.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.02 : 12,571.32 = 4,221.98 : x
  2. Step 2: Convert to fraction form
    8,385.02/12,571.32 = 4,221.98/x
  3. Step 3: Cross multiply
    8,385.02x = 12,571.32 × 4,221.98
  4. Step 4: Simplify right side
    8,385.02x = 53,075,861.61
  5. Step 5: Solve for x
    x = 53,075,861.61/8,385.02
  6. Step 6: Final answer
    x = 6,329.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.